I mostly play slow decks and i only played against two DH with Glide. The meta isn't favorable for the card but it's awful if you are trying to keep resources in hand. They vomit everything on their hand and then they play this and refill their hand while discarding yours. It may not be as op as i thought but it's as anti-fun as i thought.
I got Lorekeeper Polkelt from the bundle and i've been testing him mostly in highlander decks. It's an interesting card that has its uses but it can be a liability as well. You can play him one turn before you get to your big cards and you are guaranteed to draw them on the next turn. I have used it to have Dinotamer Brann consistently in my hand by turn 7 but if you don't draw Polkelt in time then he just becomes useless. Also, he's bad for specific card combinations. I've been testing Professor Slate in the deck as well and it's not good to have both him and/or Rapid Fire at the bottom of your deck. Polkelt is a little tricky to use properly and not as much of a meta breaker as people thought.
Speaking of Professor Slate, that's a card i haven't seen at all. Not in ladder, not in videos, absolutely nothing. I decided to test the card and it's quite good. Hunter doesn't lack hard removal. In fact, they have a lot of it right now with both Slate and Krolusk Barkstripper joining his arsenal alongside Deadly Shot and Rotnest Drake. The key difference is that Slate isn't random. You can choose your destruction target and that's relevant against wider boards. The problem is the lack of good spells to use with the card. Rapid Fire is good with Slate and... pretty much nothing else. Well, there's Vereesa Windrunner but nobody uses her so... Yeah. Besides that, we have Explosive Shot and Multi-Shot. These are not good enough. There will be people making the atrocious mistake of running into an Explosive Trap before removing Slate but i can't really count secrets as those are very easy to play around. In the end, the card lacks proper support but he can easily become great with a decent and cheap Multi-hit/AoE spell (like Grievous Bite in Wild).
Mindrender Illucia is another card that's really hard to utilize properly. She is mostly good for disrupting combos but those are extremely rare because the ladder is full of aggro decks. In my experience, she isn't great in control or midrange games because even if you waste your opponent's resources they can do the same to you. You don't want to play her with your big cards in hand and if you wait too much then there won't be much left to disrupt. In aggro games you can actually use her more effectively because your opponent is mostly holding low cost cards and you are holding high cost cards. If you play her early you can screw them and they won't be able to do much with your hand. Overall, she is another card that's really tricky to play with and she gives me the tech card vibe.
The meta isn't great on my end as i'm facing Druid all the time. There are a lot of Face Rogues (ugh...) and all sorts of Hunter decks as well. I rarely see Paladins and Warriors and not much else. Druids tend to fall apart pretty quickly against any aggression. However, it's undeniable that Lightning Bloom is a liability and it's just going to cause problems for the remainder of the year and the next one. Secret Passage is also pretty ridiculous. Voracious Reader is only good in extreme hyper aggressive decks that vomit their hands very quickly but the card isn't very good in any deck with cards that costs 4 or more. I think it will be fine if Face DH and Face Rogue fall from the meta.
Just as i expected, Mozaki, Master Duelist is extremely difficult to utilize as she is a combo card and the ladder is infested with aggression. Combo decks just fall apart very easily because of that. So far, she seems like a big meme that's going to see play just because combo lovers will never give up on making cards like that work. Ras Frostwhisper is much better and can be slotted into Highlander Mage without any other support cards. I don't play Shaman so i don't know how he's doing in that class. Btw, Ras is the only dual class legendary i've got so far. Really unlucky.
Finally, there's Sphere of Sapience. The card is very good in specific decks. I utilize it in my Wild OTK Miracle Priest. The deck always ran into the problem of drawing my big key minions before i could play Zerek's Cloning Gallery and the weapon prevents that which greatly increased its consistency. The weapon is good in Big Warrior and Duel Paladin as well because you really want to keep the big minions in the deck so you cheat them out. Sphere is pretty good, especially in decks that want to keep certain cards inside the deck.
So far, the expansion just feels okay. There's some big mana cheat shenanigans happening (mostly because of Lightning Bloom but High Abbess Alura also contributes to the issue), lots of aggro decks, combo decks dying to aggro decks (as always) and Control decks seem to be AFK (at least, i haven't seen a lot of them). Let's see what's going to happen next week.